Vivo X21 vs Oppo R15 Dream Mirror Edition comparison

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ratings
Overall NDTV RatingRead Review-
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
key specs
Display6.28-inch6.28-inch
Processor2.2GHz octa-core2GHz octa-core
Front Camera12-megapixel 20-megapixel
Resolution1080x2280 pixels1080x2280 pixels
RAM6GB6GB
OSAndroid 8.1Android 8.1
Storage128GB128GB
Rear Camera12-megapixel + 5-megapixel 16-megapixel
Battery Capacity3200mAh3400mAh
general
Release dateMarch 2018March 2018
Launched in IndiaYes-
Form factorTouchscreenTouchscreen
Dimensions (mm)154.50 x 74.80 x 7.40155.30 x 75.00 x 7.50
Weight (g)156.20175.00
Battery capacity (mAh)32003400
Removable batteryNo-
Fast chargingProprietary-
ColoursBlack, GoldDream Mirror Red, Ceramic Edition
display
Screen size (inches)6.286.28
TouchscreenYesYes
Resolution1080x2280 pixels1080x2280 pixels
Aspect ratio19:9-
hardware
Processor2.2GHz octa-core2GHz octa-core
Processor makeQualcomm Snapdragon 660Qualcomm Snapdragon 660
RAM6GB6GB
Internal storage128GB128GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)256256
camera
Rear camera12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)16-megapixel
Rear autofocusPhase detection autofocus-
Rear flashLEDLED
Front camera12-megapixel (f/2.0)20-megapixel
software
Operating systemAndroid 8.1Android 8.1
SkinFunTouch 4.0ColorOS 5.0
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 a/b/g/n/ac
GPSYesYes
BluetoothYes, v 5.00Yes, v 4.20
NFCNo-
InfraredNo-
USB OTGYes-
Micro-USBYes-
Headphones3.5mm-
FMNo-
Number of SIMs22
sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sensors
Fingerprint sensorYes-
Compass/ MagnetometerYes-
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYes-